04-21-2009, 02:18 PM
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#11 (permalink)
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Base Member
Join Date: Mar 2009
Location: Alabama
Posts: 20
Drives: 2004 VW R32
Rep Power: 205
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Quote:
Originally Posted by wstar
There's definitely a very stiff rubber ring on the outer backside of the pulley, but it's molded right onto it in a seamless fashion, so it's kinda hard to tell where metal starts or rubber ends without, again, destructively investigating it.
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do you have a multitester? if one side doesn't conduct with the other, one might assume that the rubber layer, separating the two rings completely, may act as a harmonic damper. if they do conduct, i'd bet that the internal composition of the pulley is solid, and thus the rubber would be for nvh.
i'm really just guessing. where are the automotive engineer members of this board?
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